Flanging device



Eek T12, i946. K. c. BUG@ FLANGING DEVICE 5 Sheets-Sheet l Filed. June 16, 1.945

All-- Q INVENTOR. lfm@ 05%99 BY Feb. 12, 1946.

K. c;A BUGG 2,394,841

FLANGING DEVICE 5 Sheets-Sheet 2 Filed Jpn 16, 1943 @@5210 12? C EUG@ ZQQJ FLANGING DEVICE Filed June le, 1943 5 sheets-sneek 4 INVENTOR.

Feb. 12, 1946.

K.- C. BUGG FLANGING DEVICE v Filed June -16, 194,5l

5 Sheets-Sheet 5 INVENTOR.

f Okgg, BY- y Patented Feb, 12, 1946 I UNITED STATES PATENT OFFICE FLANGING DEVICE Kenly C. Bugg, Fort Wayne, Ind.

i Application June 16, 1943, Serial No. 491,001

11 Claims.

This invention pertains to portable or semiportable flanging or iiaring mechanism particularly adaptable for daring tubes and the like.

It is an object of this vinvention to provide a device for firmly and securely positioning and holding a tube or the like while a flanging operation is performed thereon.

Another object of the invention is to provide a machine for rapidly forming a controlled flare or flange on a tube or the like.

Still another object of the invention is to provide a portable or semi-portable machine adapted to be operable to form controlled flanges or ares on a tube or the like, which flanges or flares fulfill all requirements of manufacture and service, and where there is no tendency to disrupt or Work-harden the material of the tube.

Yet anothei` object ofthe invention is to provide a flaring device for aring the end of a tube or the like, the device comprising means for holding the tube externally and lling the tube internally adjacent the part held, whereby there is no tendency for tube collapse or movement while the ilare is being made.

A further object of the invention is to provide a nange or flaring device adapted particularly to rmly hold and ilare a tube without distortion of the tube, the tube being held rigidly and the flare formed in one operation, even though extremely hard tubes are flared.

With these and various other objects in View, the invention may consist of certain novel features of construction and operation as willV be more ully described and particularly pointed out in the specication, drawings and claims appended hereto.

In the drawings, which illustrate embodiments of the device and wherein like reference characters are used to designate like parts- Figure 1 is a top plan view of the flanging or ilaring device embodying the invention;

Figure 2 is a side elevation of the flanging device illustrated in Figure 1;

Figure 3 is an enlarged transverse sectional elevation taken substantially in the plane as indicated by the line 3 3v of Figure 1;

Figure 4 is an enlarged transverse sectional elevation taken substantially in the plane as indicated by the line 4 4 of Figure l; Y

Figure 5 is an enlarged fragmentary, sectional, plan view of the device illustrated in Figure 1, showing the position of the parts and tube prior to the holding and ilaring operation, the same being taken substantially in the plane, as indicated by the line 5--5 of Figure 2;

Figure 6 is an enlarged fragmentary sectional top plan view, corresponding to Figure 5,showing the parts of the machine and thev tube in position for daring and wherein said tube is held firmly against the movement. 'f

Figure '7 is an enlarged end elevation of the 'flaring device illustrated in Figure 1, showing the chuck or tube holding means in holding position as illustrated in Figure 6. Figure 8 is a fragmentary sectional plan taken substantially in the plane as indicated by the line 8-8 of Figure '7.

Figure 9 is a plan view showing the fabrication of the chuck'segments embodied in this device;

Figure l0 is a side elevation of the chuck segments; and

Ycentricrace 32 secured thereto as at 34. 'The race is provided with the anti-friction bearing assembly 36 on which is mounted the crank 38,

the crank being pivoted as at 40 to the sleeve 42. The sleeve 42'is providedwith the spaced rods 441 extending through suitable apertures or bores in the end plate 46, said end plate being secured to the side plates 24, and said rods 44 are secured as at 48 to the chuck operating member 56. The

' chuck operating member 50 is apertured as at 52 for insertion of the tube 54 to be flanged, the member having the internal frusto-conical chuck operating surface 56.

The shaft 28 is provided with the anti-friction bearing 58 on which the eccentric race 60 is mounted, a spacerl being disposed on said shaft between the eccentric races 32 and 6D. The eccentric race 60 is provided With the anti-friction bearing assembly 62, and crank 64 is mounted thereon, said crank being pivoted as at 66 to the tubular :Hanging die holder 68, which is slidably mounted in the bearing sleeve 10. 'I'he bearing sleeve `Hl is threaded or otherwise secured as at 12.

through which the expanding chuck rod holder erating means |30.

82 extends, said holder being channeled or bored for the reception of the expanding chuck rod 84. The rod holder 82 is held against longitudinal movement by means of the key 86 which is secured to the sleeve 10. The rod 84 is provided with a spring seat 88, and the spring 90 is interposed between said spring seat 88 and the end 92 of the expanding chuck rod holder 82, said spring urging said rod toward the right as viewed in Figure 5. The outer end of the rod is provided with the cam 93 having the frusto-conical surface 94 which is adapted to urge the internal chuck members or segments 96 outwardly toward the inner wall of the tube 54, whereby when the rod 84 is at its extreme right position, the internal chuck members 96 completely and rmly fill the tube, as illustrated in Figure 6. A spring 91 urges the segments 86 toward inoperative position and returns the segments from the position shown in Figure 6 to that shown in Figure 5 when the cam 93 is moved toward the left against spring r90.

The external chuck 98 is adapted to tightly engage the tube 54 when the chuck operating member 50 is moved to its extreme right position, as illustrated in Figure 6. The chuck member 98 is preferably formed as illustrated in Figure 9. Four blocks of the .proper size are provided, and the chuck segments 02 are formed therefrom, such as shown and described in application Serial No. 452,493, iiled July 27, 1942. The chuck segments are provided with the recesses |04 for the reception of suitable spring means urging the chuck segments to released or separated position, and said chuck segments are provided with the threaded recesses |06 for the reception of the stripper screws |08, said stripper screws being slidable in slots ||0 provided in the chuck support ||2.

The chuck support ||2 lis secured to the end .plate as at ||4 and is recessed for slidably .receiving the chuck operating `member 50. In one segment there is provided a slot or recess H6 (Figure 8) for the reception of the tube stop or stripper I8, said tube stop being slidably secured byl means .of one of the stripper screws |08, and being urged inwardly by means of the yspring |20, said spring being provided with the lpositioning Ypiston |22.

The eccentric 60 is non-rotatably provided with the gear |24, `said gear being adapted to be operated by means of the rack 26, said rack being -controlled by the air motor |28 having the op- Gear 30 is adapted to be operated by means of the rack |32 controlled by the air motor |34, said air motor being adapted to -be operated by means of the control means |36. In order to balance the operation of the crank 38, the eccentric |38 is provided, keyed as at |39 to the shaft 2.8 and being identical with the eccentric 32. It is likewise provided with the' anti-friction bearing assembly |40 on which the crank |42 is mounted, said crank being identical to the crank 38 and being pivoted as at |44 to the. sleeve 42.v

The. sleeve 42 is provided with the .spaced supports. |46, to whichis secured the internal chuck cooking plate |48, it being seen that said plate isr movable with the sleeve 42 and engages seat 88.

When it is desired to flange a tube or the like,

it is of course understood that the chuck segments |02 of chuck 98 are in expanded or separated position. The tube 54 is inserted in the jaws of the chuck segments |02 and moved inwardly to engage the stop H8. Operation of the motor operating means |36 moves the rack |32 forwardly, causing rotation of the gear 38 through 180. This movement of the gear 30 5 causes the cranks 38 and |42 to move toward the right as viewed in Figure 5, which causes the cooking plate |48 to disengage the spring seat 88, permitting the spring 90 to move the rod 84 toward the right, as viewed in said figure, expanding the internal chuck segments 96 to ll the tube 54 (Figure 6). Continued movement of the sleeve 42 causes the chuck operating means to move the chuck segments |82 to tightly engage the tube externally thereof.

Operation of the motor operating means |38 causes movement of the rack |26, which in turn rotates the gear |24 through 180, causing the die holder 88 to move toward the left, as viewed in Figure 5, causing the die 'i4 to flange the end of the tube 54, the iiange extending into the recess |50 of the chuck segments |02. Movement of the die T4 causes outward movement of the stripper Y| I8 against the spring |28 during the flanging operation.

Operation of the operating means |30 and |36 in an opposite direction will cause the racks |26 and |82 to move toward the right, as viewed in Figure l, thereby retracting the die 14 and mov- `ing the chuck operating means 5|) to the position illustrated in Figure 5, releasing the chuck segments. This movement permits the stripper H8 to move inwardly to the position illustrated in Figure 8, and this movement similarly causes the cooking plate |48 to engage the seat 88 to move the rod 84 toward the left, as viewed in Figure 5, permitting release of the internal chuck segments 96, whereby the flanged tube may be removed from the chuck.

It is to be understood that I do not wish t-o be limited by the exact embodiments of Athe device shown, which are merely by way of illustration and not limitation, as various and other forms of the device will, of course, be apparent to those skilled in the art Without departing from the spirit of the invention or the scope of the claims.

What I claim is:

l. In a machine for daring tubes or the like, the combination of a base, an end plate supported on said base, a chuck support secured to said end plate, a chuck operating member slidably mounted in said support and having an annular sloping chuck engaging surface, a chuck comprising chuck segments having a complementary surface engaging said rst named surface, movement of 55 said chuck operating member toward said end plate moving said segments toward tube engaging position, means tending to separate said segments, said segments having a tube engaging surface and an annular ange receiving cavity, means slidably connecting said segments to said end plate, a bearing member secured to said end plate and projecting inwardly thereof, a die holder slidably mounted on said bearing member, a

die secured to said die holder and movable thereby toward and away from said chuck to flare a tube engaged by said chuck, means slidably mounted between said chuck and end plate for limiting the position of a tube to be flared, an internal chuck comprising segments disposed substantially in the plane of said nrst named chuck, means tending to move said segments to inoperan .tive position, a rod holder iixed to said bearingr sleeve and to said segments of the second named chuck, a chuck expanding rod extending through said rod holder and having expanding means for VVflared,- means for. causing said expanding means to move said second named segments into engagement with the tube, a reciprocal member movable on said bearing member and connected tofsaid chuck operating member, a cooking plate movable by said reciprocal member and engageable with said rod to render said expanding means inoperative when said chuck operating member vis inoperative, and means operative to move 'said Y reciprocal member to cause said chuck operating vmember to operate the rst named chuck segments to tube engaging position and to .cause said cooking plate to releasesaid rodto permit the `second named chuck segments to be moved to tube engaging position yby the fourth named means and to cause the die to engage and iiare a portion of theA tube into said cavity.

2. In a machine for flaring tubes or the like, the combination of a base, an end plate supported on said base, a Vchuck support Secured to said end plate, a chuck operating member slidably mounted in said support and having an anknular sloping chuck engaging surface, a'chuck comprising chuck segments having a complementary surface engaging ysaid iirst named surface, movement of said chuck operating member toward said end plate moving said segments toward tube mounted between said chuck and end plate for limiting the position of a tube to be flared, an internal chuck comprising segments disposed substantially in the plane of said first named-chuck,

means tending to move said segments to inoperative position, a rod holder fixed to said bearing ysleeve and lpivotally positioning said segments of the second named chuck, a chuck expanding rod extending through saidrrod holder and having `vexpanding means for causing expansionof the second named chuck segments to internally engage the tube to be fiared, means for causing said by, cranks mounted on said eccentrics and movable through a predetermined stroke, one Aof the cranks being pivoted to said reciprocal member, and the other of the cranks being pivoted to said die holder, means for rotating said shaft through 180 whereby said cranks are moved through their strokes to move said reciprocal member to cause said chuck operating member to operate the first named chuck segments to tube engaging position and to cause said cooking plate to release said rod to permit the second named chuck segments to be moved to tube engaging position by the fourth named means andto cause the die to engage and flare a portion of the tube into said cavity. f

A3. In a machine for flaring tubes or the like, the combination of a' base, an end plate supported on said base, a chuck support secured to said end ,c plate, a chuck operating member slidably mounted in said support and having an annular sloping chuck. engaging surface, a chuck comprising vsaid chuck operating member toward said end plate moving said segments toward tube engaging position, means tending to separate said segments, said segments having a tube engaging surface and an annular flange receiving cavity, means slidably connecting said segments to said endplate, a bearing member secured to said end plate and projecting inwardly thereof, a die holder slidably mounted .on said bearing member, a die secured to said die holder and movable thereby toward and away from said chuck to flare a tube engaged by said chuck, an internal chuck comprising'segments disposed substantially in the plane of said first named chuck, means tending to move said segments to inoperative position, a rod holder fixed tosaid'bearing sleeve and pivotally positioning said segments of the second named chuck, a chuck expanding rod extending through said rod holder and having expanding means for causing expansion of the second named chuck segments to internally engage the tube to be flared, means for causing said expanding means to move said second named segments into engagement with the tube, a reciprocal member movable on said bearing member and connected to said chuck operating member, a cooking plate movable by said reciprocal member and engageable with said rod toV render said expanding means inoperative ywhen said chuck operating member is inoperative,

and means operative to move said reciprocal member to cause said chuck operating member to operate the first named chuck segments'to tube engaging position and to cause said cooking plate torelease said rod to permit the second named Vchuck segments to be moved to tube engaging rrend plate, a chuck operating member slidably mounted in said support and having an annular sloping chuck engaging surface, a chuck comprisingchuck segments having a complementary surface engaging said first named surface, movement of said chuck operating member toward said end plate moving said segments toward tube engaging position, means tending to separate said segments, said segments having a tube engaging surface and an annular flange receiving cavity, means slidably connecting said segments to said `endplate, a bearing member secured to said end .plate-and projecting inwardly thereof, a die holder slidablyy mounted on said bearing member, a

die secured to said rdie holder and movable thereby toward and away from said chuck to arefa tube engaged by said chuck, an internal Vchuck comprising segments disposed substantially in the plane of said rst named chuck, means tending to move said segments to inoperative position, a. rod holder fixed to said bearing sleeve the tube to be flared, means for causing said expanding means to move said second named segments into engagement with the tube, a reciprocal member movable on said bearing member and connected to said chuck operating member,

a. cooking plate movable by said reciprocal mem-` ber and engageable with said rod to render said expanding means inoperative when said chuck operating member is inoperative, a shaft, eccentrics mounted on said shaft and movable thereby, cranks mounted in said eccentricsand movable through a predetermined stroke, one of the cranks being pivoted to said reciprocal member, and the other of the cranks being pivoted to said die holder, means for rotating said shaft through 180 whereby said cranks are moved through their strokes to move said reciprocal member to cause said chuck operating member to operate the first named chuck segments to tube engaging position and to cause said cooking plate to release said rod to permit the second named chuck segments to be moved to tube engaging position by the third named means, and to cause the die to engage and nare a portion of the tube into said cavity.

5. In a machine for flaring tubes or the like, the combination of a base, an end plate supported 'on said base, a `chuck support secured to said end plate, a chuck operating member slidably mounted in said support and having an annular sloping chuck engaging surface, a chuck comprising chuck segments having a complementary surface engaging said first named surface, movement of said chuck operating member toward said end plate moving said segments toward tube engaging position, means tending to separate said segments, said segments having a tube engaging surface and an annular nange receiving cavity, means slidably connecting said segments to said end plate, a bearing member secured to said end plate and projecting inwardly thereof, a die holder slidably mounted on said bearing member, a die secured to said die holder and movable thereby toward and away from said chuck to nare a tube engaged by said chuck, means slidably mounted between said chuck and vend plate for limiting the position of a tube to be flared, an internal chuck comprising segments disposed substantially in the plane of said first named chuck, means tending to move said segments to inoperative position, a rod holder xed to said bearing sleeve and pivotally positioning said segments of the second named chuck, chuck expanding means for causing expansion of the second named chuck segments to internally engage the tube to be flared, means for causing said expanding means to move said second named segments into engagement with the tube, a reciprocal member movable on said bearing member and connected to said chuck operating member, means movable by said reciprocal member to render said expanding means inoperative when the chuck operating member is inoperative, and means operative to move said reciprocal member to cause said chuck operating member to operate the rst named chuck segments to tube engaging position and to cause said cooking plate to release said rod to permit the second named chuck segments to be moved to tube engaging position by the fourth named means and to cause the dieto engage vand nare a portion of the tube into said cavity.

6. In a machine for flaring tubes or the like, the combination of a base, an endk plate supported on said base, a chuck support secured to said end plate, a chuck operating member slidably mounted in said support and having'an annular sloping chuck engaging surface, a chuck comprising' chuck segments having a complementary surface engaging said first named surface, movement of said chuck operating member toward said end plate moving said segments toward tube engaging position, means tending to separate said segments, said segments having a tube engaging surface and an annular flange receiving cavity, means slidably connecting said segments to said end plate, a bearing member secured to said end plate and projecting inwardly thereof, a die holder slidably mounted on said bearing member, a die secured to said die holder and movable thereby toward and away from said chuck to flare a tube engaged by said chuck, means slidably mounted between said chuck and end plate for limiting the position of a tube to be flared, an internal chuck comprising segments disposed substantially in the plane of said first named chuck, means tending to move said segments to inoperative position, a rod holder fixed to said bearing sleeve and pivotally'positioning said segments of the second named chuck, chuck expanding means for causing expansion of the second named chuck segments to internally engage the tube to be flared, means for causing said expanding means to move said second named segments into engagement with the tube, a reciprocal member movable on said bearing member and connected to said chuck operating member, means movable by said reciprocal member to render said expanding means inoperative when the chuck operating member is inoperative, a shaft, eccentric's mounted on said shaft and movable thereby, cranks mounted in said eccentrics and movable through a predetermined stroke, one ofthe cranks being pivoted to said reciprocal member, and the other of the cranks being pivoted to said die holder, means for rotating said shaft through whereby said cranks are moved through their strokes to move said reciprocal member to cause said chuck operating member to operate the first named chuck segments to tube engaging position and to cause said cocking plate to release said rod to permit the second named chuck segments to be moved to tube engaging position by the fourth named means and to cause the die to engage and nare a portion of the tube into said cavity.

'7. In a machine for haring tubes or the like, the combination of a base, an end plate supported on said base, a chuck support secured to said end plate, a chuck operating member slidably mounted in said support and having an annular sloping chuck engaging surface, a chuck comprising chuck segments having a complementary surface engaging said first named surface, movement of said chuck operating member toward said end plate moving said segments toward tube engaging position, means tending to separate said segments, said segments having a tube engaging surface and an annular flange receiving cavity, means slidably connecting said segments to said end plate, a bearing member secured to said end plate and projecting inwardly thereof, a die holder slidably mounted on said bearing member, a die secured to said die holder and movable thereby toward and away from said chuck to nare a tube engaged by said chuck, an internal chuck comprising segments disposed substantially in the plane of said first named chuck, means tending to move said segments to inoperative position, a rod holder fixed to said bearing sleeve and pivotally positioning said segments of the second named chuck, chuck expanding means for causing expansion of the second named chuck segments to internally engage the tube to be flared, means for causing said expanding means to move said second named segments into engagement With the tube, a reciprocal member movable on said bearing member and yconnected to said chuck operating member, movable by said reciprocal member to render said expanding means inoperative when the chuck operating `member is inoperative and means operative to move said reciprocal member to cause said chuck operating member to operate the rst named chuck segments to tube engaging .position and to cause said cooking plate to release said rod to permit the second named chuck segments to be moved to tube engaging position by the third named means, and to cause the die to engage and flare a portion of the tube into said cavity.

8. In a machine for flaring tubes or the like, the combination of a base, chuck operating means slidably mounted on said base and having a sloping chuck engaging surface, a chuck comprising chuck segments having a complementary surface engaging said rst named surface, said chuck operating means being movable to move said segments toward tube engaging position, means urging said segments apart, said segments having a tube engaging surface and a flange receiving cavity, a die holder movable toward and away from sai-d chuck, a die secured to said die holder and adapted to nare a tube when moved toward said chuck and into engagement With the tube, an

internal chuck comprising segments disposed substantially in the plane of said rst named chuck, means tending to move said segments to inoperative position, a rod holder pivoted to said segments of the second named chuck and maintaining said segments in said plane, a chuck expanding rod extending through said rod holder and having expanding means for causing expansion of the second named chuck segments to internally engage the tube to be flared, means for causing said expanding means to move said second named segments into engagement with the tub'e, a reciprocal member movable to operate said chuckloperating means, and means operative to move said reciprocal member to cause said chuck operating means to operate the nrst named chuck segments to tube engaging position and to cause the second named segments to expand to tube engaging position and to cause the die to 9. In a machine for aring tubes or the like, the combination of a chuck comprising chuck segments, means urging said segments apart to inoperative position, chuck operating means movable to move said segments to tube engaging, or operative position, said segments having a tube engaging surface tightly engaging a tube to be ared When said segments are in operative position, a die holder movable toward and away from said chuck, a die secured to Said die holder and adapted to flare a tube when moved toward said chuck and into engagement with the tube, an internal chuck comprising segments disposed substantially in the plane of said rst named chuck, means tending to move said segments to inoperative position, chuck expanding means for causing expansion of the second named chuck segments to internally engage the tube to be flared, means for causing said expanding means to move said second named segments into engagement with the tube, a reciprocal member movable to operate said chuck operating means, and means operative to move said reciprocal member to cause said chuck operating means to operate the rst named chuck segments to tube engaging position and to cause the second named segments to expand to tube engaging position and to cause the die to engage and iiare a portion of the tube,

10. In a device of the character described, the combination of an external chuck movable to engage a tube, an internal chuck expandable to engage the tube in substantially the same plane as said external chuck, means movable to operate both of said chucks to tube holding position, and a ilanging die spaced from said chucks and bodily movable With respect to each of said chucks to engage and ange the end of the tube While each of said chucks is in stationary holding relation with respect to said tube,

11. In a device of the character described, the combination of an external chuck movable to engage a tube, an internal chuck expandable to engage the tube in substantially the same plane as said external chuck, means movable to operate both of said chucks substantially simultaneously to tube holding position, positioning means for limiting the position of the tube prior to engagement thereof by said chucks, and a flanging die spaced from said chucks and bodily movable with respect to each of said chucks to engage and flare the end of the tube` While each of said chucks is in stationary holding relation with respect to said tube.

KENLY C. BUGG. 

